U.S. patent application number 12/177316 was filed with the patent office on 2009-01-29 for trunk lid frame structure.
This patent application is currently assigned to HONDA MOTOR CO., LTD.. Invention is credited to Shintaro Ichimura, Tomofumi Ichinose.
Application Number | 20090026793 12/177316 |
Document ID | / |
Family ID | 39791412 |
Filed Date | 2009-01-29 |
United States Patent
Application |
20090026793 |
Kind Code |
A1 |
Ichinose; Tomofumi ; et
al. |
January 29, 2009 |
TRUNK LID FRAME STRUCTURE
Abstract
In the present frame structure of a trunk lid: the trunk lid has
an outer panel and an inner panel, and is formed such that its
cross-section is approximately L-shaped, with a top face part and a
rear face part; left and right hinge installation sections are
provided, and a lock installation section is provided in the left
to right center of the rear face part; left and right beading parts
are provided on the inner panel; and fastening parts of hinge arms
are arranged diagonally along the lengthwise direction of the left
and right beading parts.
Inventors: |
Ichinose; Tomofumi;
(Shioya-gun, JP) ; Ichimura; Shintaro;
(Utsunomiya-shi, JP) |
Correspondence
Address: |
RANKIN, HILL & CLARK LLP
38210 Glenn Avenue
WILLOUGHBY
OH
44094-7808
US
|
Assignee: |
HONDA MOTOR CO., LTD.
Tokyo
JP
|
Family ID: |
39791412 |
Appl. No.: |
12/177316 |
Filed: |
July 22, 2008 |
Current U.S.
Class: |
296/76 |
Current CPC
Class: |
B62D 25/105
20130101 |
Class at
Publication: |
296/76 |
International
Class: |
B62D 25/10 20060101
B62D025/10 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 27, 2007 |
JP |
2007-196022 |
Claims
1. A frame structure of a trunk lid installed in a vehicle,
wherein: the trunk lid has an outer panel on an outside of the
vehicle and an inner panel on an inside of the vehicle, and is
formed such that its cross-section is approximately L-shaped, with
a top face part and a rear face part; left and right hinge
installation sections to which hinge arms of left and right trunk
hinges are attached are provided respectively on the left and right
sides of the top face part, and a lock installation section to
which a trunk lock mechanism is attached is provided in the left to
right center of the rear face part; left and right beading parts,
which are in an approximately V-shaped arrangement such that they
extend between the left and right hinge installation sections and
the lock installation section, are provided on the inner panel; and
fastening parts of hinge arms, which are fastened to the left and
right hinge installation sections, are arranged diagonally along
the lengthwise direction of the left and right beading parts.
2. The frame structure of a trunk lid according to claim 1,
wherein: a hinge side beading part that extends between the left
and right hinge installation sections is provided on the inner
panel; and the hinge side beading part and the left and right
beading parts are arranged continuously.
3. The frame structure of a trunk lid according to claim 2,
wherein: left and right stiffening members are provided in the left
and right hinge installation sections respectively; and the left
and right stiffening members are provided spanning the left and
right beading parts and the hinge side beading part.
4. The frame structure of a trunk lid according to claim 3, wherein
the left and right stiffening members extend diagonally along the
lengthwise direction of the left and right beading parts, and also
have wall parts that span the hinge side beading part.
5. The frame structure of a trunk lid according to claim 3, wherein
ends of fastening parts of the hinge arms are cut along a widthwise
direction of the vehicle.
Description
BACKGROUND OF THE INVENTION
[0001] Priority is claimed on Japanese Patent Application No.
2007-196022, filed Jul. 27, 2007, the contents of which are
incorporated herein by reference.
[0002] 1. Field of the Invention
[0003] The present invention relates to the frame structure of a
trunk lid that is provided in a vehicle.
[0004] 2. Description of the Related Art
[0005] Heretofore, in the above-mentioned trunk lid structure,
there is one in which a trunk lid includes an outer panel and an
inner panel, and is formed such that its cross-section is
approximately L-shaped, with a top face part and a rear face part,
wherein left and right hinge installation sections are provided on
the left and right sides of the top face part, a lock installation
section is provided in the left to right center of the rear face
part, and left and right beading parts, which are in an
approximately V-shaped arrangement such that they extend between
the left and right hinge installation sections and the lock
installation section, are provided on the inner panel (for example,
refer to Japanese Unexamined Patent Application, First Publication
No. H06-16177). In this manner, by linking the left and right hinge
installation sections and the lock installation section via the
left and right beading parts, it is possible to ensure the
stiffness of the trunk lid efficiently.
[0006] Incidentally, in the above-described conventional technique,
hinge installation bearing surfaces of the left and right hinge
installation sections are formed in the vicinities of the end parts
of the left and right beading parts. However, flexing is likely to
occur between hinge arms, which are attached to the hinge
installation bearing surfaces, and the left and right beading
parts. Therefore, improvement is required in order to increase the
stiffness of the whole trunk lid.
[0007] The present invention was made in view of the above
circumstances, and has an object of limiting the flexing of the
left and right hinge installation sections in the frame structure
of a trunk lid installed in a vehicle, to improve the stiffness of
the whole trunk lid.
SUMMARY OF THE INVENTION
[0008] In order to solve the above problems and to achieve the
associated object, the present invention adopts the followings.
[0009] The present invention is a frame structure of a trunk lid
installed in a vehicle, wherein: the trunk lid has an outer panel
on an outside of the vehicle and an inner panel on an inside of the
vehicle, and is formed such that its cross-section is approximately
L-shaped, with a top face part and a rear face part; left and right
hinge installation sections to which hinge arms of left and right
trunk hinges are attached are provided respectively on the left and
right sides of the top face part, and a lock installation section
to which a trunk lock mechanism is attached is provided in the left
to right center of the rear face part; left and right beading
parts, which are in an approximately V-shaped arrangement such that
they extend between the left and right hinge installation sections
and the lock installation section, are provided on the inner panel;
and fastening parts of hinge arms, which are fastened to the left
and right hinge installation sections, are arranged diagonally
along the lengthwise direction of the left and right beading
parts.
[0010] According to the above-described trunk lid frame structure,
since the fastening parts of the hinge arms of the left and right
trunk hinges are arranged diagonally along the lengthwise direction
of the left and right beading parts, the left and right beading
parts are linked to the fastening parts of the hinge arms in
straight lines, so that it is possible to limit the flexing of the
left and right hinge installation sections efficiently, and thereby
improve the stiffness of the whole trunk lid.
[0011] Furthermore, it is possible to provide the hinge
installation bearing surfaces of the left and right hinge
installation sections directly on the left and right beading parts,
so that compared with the case in which the hinge installation
bearing surfaces are formed separately in the vicinities of the
left and right beading parts, it is possible to improve the
formability of the inner panel and improve the stiffness as a
result of increasing the beading depth and the like, and also
improve the workability and lightening as a result of enlarging the
working holes (lightening holes).
[0012] A construction may be employed in which: a hinge side
beading part that extends between the left and right hinge
installation sections is provided on the inner panel; and the hinge
side beading part and the left and right beading parts are arranged
continuously.
[0013] In this case, since the hinge side beading part that links
the left and right hinge installation sections, and the left and
right beading parts are continuous, the left and right hinge
installation sections and the lock installation section, which are
force input points to the trunk lid, are linked via the beading
parts, and thus it is possible to increase the stiffness of the
whole inner panel efficiently.
[0014] A construction may be employed in which: left and right
stiffening members are provided in the left and right hinge
installation sections respectively; and the left and right
stiffening members are provided spanning the left and right beading
parts and the hinge side beading part.
[0015] In this case, since the stiffening members of the left and
right hinge installation sections are provided spanning the left
and right beading parts and the hinge side beading part, it is
possible to increase the stiffness with respect to the load at the
joining sections of the left and right beading parts and the hinge
side beading part when opening and closing the trunk lid.
[0016] A construction may be employed in which the left and right
stiffening members extend diagonally along the lengthwise direction
of the left and right beading parts, and also have wall parts that
span the hinge side beading part.
[0017] In this case, since the left and right stiffening members
have wall parts that span the hinge side beading part along their
lengthwise direction, that is, the lengthwise direction of the left
and right beading parts, it is possible to increase the stiffness
with respect to the load at the joining sections of the left and
right beading parts and the hinge side beading part when opening
and closing the trunk lid.
[0018] A construction may be employed in which ends of fastening
parts of the hinge arms are cut along a widthwise direction of the
vehicle.
[0019] In this case, it is possible to effectively prevent the
occurrence of stress concentration originating from the corners at
the ends of the fastening parts of the hinge arms.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] FIG. 1 is a perspective view of the rear part of a vehicle
according to an embodiment of the present invention.
[0021] FIG. 2 is an exploded perspective view of a trunk lid of the
vehicle.
[0022] FIG. 3 is a perspective view of an inner panel of the trunk
lid.
[0023] FIG. 4A is an explanatory view of the top face showing the
main structure of the trunk lid.
[0024] FIG. 4B is an enlarged view of part A of FIG. 4A.
[0025] FIG. 5 is a perspective view of a hinge installation section
of the above-described inner panel.
DETAILED DESCRIPTION OF THE INVENTION
[0026] Hereunder, an embodiment of the present invention will be
described with reference to the drawings. Here, the directions such
as front and rear, right and left, are the same as those directions
of the vehicle unless specified otherwise. Furthermore, arrows FR,
arrows LH, and arrows UP in the drawings designate forward of the
vehicle, leftward of the vehicle, and upward of the vehicle,
respectively.
[0027] As shown in FIG. 1, in the rear part of a three-box type
vehicle 1, a trunk lid 11 is provided on a trunk compartment 3,
which is located in the rear of a compartment 2, to open and close
its opening. The trunk lid 11 has a top face part 12 that covers
the trunk compartment 3 from above, and a rear face part 13 that
covers the trunk compartment 3 from the rear, formed as one piece,
and is constructed such that the shape of its cross-section
perpendicular to the widthwise direction (horizontal direction) of
the vehicle is approximately L-shaped. Each structure associated
with the trunk lid 11 of the present embodiment is left/right
symmetrical with respect to the left to right center of the vehicle
body unless specified otherwise.
[0028] The trunk lid 11 is supported on the vehicle body at the two
sides of the front end part of the top face part 12 via a pair of
left and right trunk hinges 14 such that it can turn thereabout.
The trunk lid 11, in its totally closed state, is positioned in a
state in which the top face part 12 is tilted beyond the horizontal
plane such that it is slightly lower toward the rear, and the rear
face part 13 is tilted such that its lower end part is located
rearward of the vertical plane. By the trunk lid 11 being turned
such that the rear face part 13 is moved upward from this state,
the opening of the trunk compartment 3 is opened upward and
rearward.
[0029] When the trunk lid 11 is turned such that the rear face part
13 is moved downward from a state in which the trunk compartment 3
is opened as described previously, and reaches the above-described
totally closed state in which the opening of the trunk compartment
3 is closed completely, a trunk lock mechanism 15 installed in the
center of the lower end part of the rear face part 13 is engaged on
the vehicle body side, and locked so as to maintain the totally
closed state. By a predetermined lock release operation being
performed from this state, the trunk lid 11 is turned as described
previously, which enables the opening of the trunk compartment 3 to
be opened.
[0030] As shown in FIG. 2, the trunk lid 11 is provided principally
with an outer panel 21, which forms its outer surface (vehicle
outer surface), and an inner panel 25, which reinforces the outer
panel 21 from the inside (trunk compartment 3 side) of the vehicle.
The inner panel 25 is installed such that it substantially
coincides with the reverse face of the outer panel 21.
[0031] That is, the outer panel 21 and the inner panel 25 are
formed such that the shape of the cross-section perpendicular to
the width direction of the vehicle is approximately L-shaped,
similarly to the overall shape of the trunk lid 11. Hereunder, the
parts forming the top face part 12 of the outer panel 21 and the
inner panel 25 are designated as an outer top face part 22 and an
inner top face part 26, and the parts forming the rear face part 13
are designated as an outer rear face part 23 and an inner rear face
part 27.
[0032] The outer panel 21 and the inner panel 25 are formed into an
integrated trunk lid 11 by: aligning the two top face parts 22 and
26 and the two rear face parts 23 and 27 with each other; joining
the outer peripheral edges (the front edges and the two side edges
of the top face parts 22 and 26; and the two side edges and the
bottom edges of the rear face parts 23 and 27) together using a
hemming process; and also joining the inner peripheral edges
appropriately using adhesive, welding, or the like.
[0033] With reference also to FIG. 3, left and right hinge
installation sections 28 are provided at the two sides of the front
end part of the inner top face part 26 of the inner panel 25 for
the installation of the left and right trunk hinges 14.
Furthermore, a lock installation section 29 is provided in the
center of the lower end of the inner rear face part 27 for the
installation of the trunk lock mechanism 15.
[0034] The left and right trunk hinges 14 are installed on the left
and right hinge installation sections 28 from the underside
(outside of the trunk lid 11, trunk compartment 3 side) using bolts
or the like, and the trunk lock mechanism 15 is installed from the
rear side (inner side of the trunk lid 11) on the lock installation
section 29 using bolts or the like (only the bolts for hinge
installation are shown, by reference symbol 14a in FIG. 2). Working
holes 16 (also lightening holes), which enable the parts other than
the trunk lock mechanism 15 to be installed in the trunk lid 11,
are formed as required in the inner panel 25.
[0035] Left and right beading parts 31, which extend between the
left and right hinge installation sections 28 and the lock
installation section 29, are formed in the inner panel 25. The left
and right beading parts 31 span the inner top face part 26 and the
inner rear face part 27, with their cross-sectional shape being
approximately uniform, extending diagonally and in straight lines
such that they are approximately V-shaped when viewed from above
(or the rear) of the trunk lid 11.
[0036] The cross-section of the left and right beading parts 31 is
a trapezoidal shape, which protrudes on the trunk compartment 3
side, and the lower base sides of the trapezoidal shape face the
outer panel 21, as an open side. The edges of the two sides on the
open side of the left and right beading parts 31 are joined to the
outer panel 21 by adhesive or welding, and the left and right
beading parts 31 and the outer panel 21 form a closed cross-section
structure (frame structure). Hereunder, the wall parts on the inner
side in the vehicle widthwise direction, the wall parts on the
outer side in the vehicle widthwise direction, and the wall parts
on the upper base side of the trapezoidal shape of the left and
right beading parts 31 are designated inner wall parts 32, outer
wall parts 33, and base wall parts 34, respectively.
[0037] The front end parts (top end parts) of the left and right
beading parts 31 are located in the vicinities of the side edges of
the inner panel 25, and they extend diagonally such that they are
separated from the side edges of the inner panel 25 and located
inside of the left and right towards the rear side (lower side). In
this manner, avoiding forming the left and right beading parts 31
at the edges of the two sides of the inner panel 25, where it is
difficult to ensure the depth of the beading, contributes to an
improvement in the formability of the whole inner panel 25.
[0038] A hinge side beading part 35, which extends between the left
and right hinge installation sections 28, is formed in the inner
panel 25. The hinge side beading part 35 is a gentle convex arc
shape toward its rear, and has an approximately uniform
cross-sectional shape, extending along the front edge of the inner
top face part 26.
[0039] The cross-section of the hinge side beading part 35 is a
trapezoidal shape, which protrudes on the trunk compartment 3 side,
and the lower base sides of the trapezoidal shape face the outer
panel 21, as an open side. The edges of the two sides on the open
side of the hinge side beading part 35 are joined to the outer
panel 21 by adhesive or welding, so that the hinge side beading
part 35 and the outer panel 21 form a closed cross-section
structure (frame structure). Hereunder, the wall part on the rear
side, the wall part on the front side, and the wall part on the
upper base side of the trapezoidal shape of the hinge side beading
part 35 are designated a rear wall part 36, a front wall part 37,
and a base wall part 38, respectively.
[0040] The beading parts 31 and 35 are arranged in an inverted
triangle shape when viewed from above (or the rear of) the trunk
lid 11, linking the left and right hinge installation sections 28
and the lock installation section 29, with these as apexes. In this
manner, by linking the left and right hinge installation sections
28 and the lock installation section 29, which are force input
points to the trunk lid 11, in straight lines using a frame
structure having the beading parts 31 and 35 as its principal
members, the stiffness is enhanced efficiently. This is especially
desirable in a trunk lid 11 that has a top face part 12 and a rear
face part 13, and whose cross-section is approximately L-shaped,
from the point of ensuring sufficient stiffness for the upward load
from the trunk lock mechanism 15 when it is closed.
[0041] The left and right hinge installation sections 28 are also
both joining sections 41 (left and right beading joining sections)
of the front end parts (top end parts) of the left and right
beading parts 31 and the left and right end parts of the hinge side
beading part 35. The lock installation section 29 is also a joining
section 45 (central beading joining section) of the lower end parts
(rear end parts) of the left and right beading parts 31.
[0042] In the central beading joining section 45, the lower end
parts of the left and right beading parts 31 are joined in a state
in which they are separated from each other by a specified
distance, with a lock installation bearing surface 46 on which the
trunk lock mechanism 15 is installed, between them.
[0043] On the other hand, in the left and right beading joining
parts 41, the front end parts of the left and right beading parts
31 and the left and right end parts of the hinge side beading part
35 are each bent at an acute angle such that they are folded toward
each other to be joined. In this manner, by arranging the front end
parts of the left and right beading parts 31 and the left and right
end parts of the hinge side beading part 35 continuously, the
stiffness of the left and right hinge installation sections 28 is
enhanced efficiently.
[0044] As shown in FIG. 2, the left and right trunk hinges 14 have
principally a base member 51, which is fastened to the vehicle body
side by bolts or the like, and a hinge arm 52, which is fastened to
the trunk lid 11 side by bolts 14a or the like. The front end parts
of the hinge arms 52 are joined to the base member 51 rotatably via
hinge shafts 53, which lie in the vehicle widthwise direction. The
rear half sections of the left and right hinge arms 52 are
fastening parts 54 for the left and right hinge installation
sections 28 of the trunk lid 11 (inner panel 25). The front half
sections of the hinge arms 52 are formed in a downward convex arc
shape so as to avoid interference with the vehicle body when the
trunk lid 11 is opened.
[0045] With reference also to FIG. 4A, the front half portions of
the left and right hinge arms 52 are arranged approximately
parallel to the rearwards-forwards direction of the vehicle.
Conversely, the rear half portions, in other words, the fastening
parts 54, are arranged such that they are located toward the inside
in the widthwise direction of the vehicle toward the rear end side.
As a result, the fastening parts 54 of the left and right hinge
arms 52 are approximately parallel to the lengthwise direction of
the left and right beading parts 31, so that the left and right
fastening parts 54 and the left and right beading parts are joined
in a straight line. In this state, the left and right fastening
parts 54 are fastened to the hinge installation bearing surfaces 42
provided in the front end parts of the left and right beading parts
31 by the bolts 14a or the like.
[0046] As a result, the left and right beading parts 31 are joined
to the fastening parts 54 of the hinge arms 52 in straight lines so
that flexing of the left and right hinge installation sections 28
is suppressed, which enhances the stiffness of the trunk lid 11
efficiently. Furthermore, it is not necessary to form other hinge
installation bearing surfaces 42 in the vicinities of the front end
parts of the left and right beading parts 31, or to bend the front
end parts of the left and right beading parts 31 along the side
edges of the inner panel 25, which improves the formability (amount
of freedom in forming) of the inner panel 25, and therefore
contributes to the improvement of the stiffness of the inner panel
25 that resulted from ensuring the depth of the beading.
[0047] As shown in FIG. 5, left and right stiffening members 55 are
provided inside the front end parts of the left and right beading
parts 31, respectively, to reinforce the peripheries of the hinge
installation bearing surfaces 42. The cross-sections of the left
and right stiffening members 55 are a trapezoidal shape, so that
they coincide with the inner surfaces of the front end parts of the
left and right beading parts 31, and extend diagonally in the
lengthwise directions of the left and right beading parts 31.
Hereunder, the wall parts on the inner side in the vehicle
widthwise direction of the left and right stiffening members 55 are
designated inner wall parts 56, the wall parts on the outer side in
the vehicle widthwise direction are designated outer wall parts 57,
and the wall parts on the upper base side of the trapezoidal shape
are designated base wall parts 58.
[0048] The inner wall parts 56, the outer wall parts 57 and the
base wall parts 58 of the left and right stiffening members 55 are
joined to the inner wall parts 32, the outer wall parts 33, and the
base wall parts 34 of the left and right beading parts 31,
respectively, by spot-welding (only the spot points that can be
illustrated, are indicated as reference symbols SP in the
drawing).
[0049] The inner wall parts 56 and the outer wall parts 57 of the
left and right stiffening members 55 extend to the front end parts
of the left and right beading parts 31 (which are also the front
wall parts 37 of the left and right end parts of the hinge side
beading part 35). At this point, the inner wall parts 56 of the
left and right stiffening members 55 span the left and right end
parts of the hinge side beading part 35.
[0050] The left and right stiffening members 55 have front end wall
parts 59 that span between the front ends of the inner wall parts
56 and the outer wall parts 57, and the front end wall parts 59
butt up against the front end parts of the left and right beading
parts 31 (front wall parts 37 of the left and right end of the
hinge side beading part 35), and are joined to them by spot
welding. The base wall parts 58 of the left and right stiffening
members 55 are spot welded to the inner panel 25 at three places,
namely; to the front of a pair of bolt holes 58a which are formed
in the base wall part 58 such that they are in line front to rear,
between the two bolt holes 58a, and rearward of the bolt holes
58a.
[0051] Two points front and rear in the rear half of the inner wall
part 56 of the left and right stiffening members 55 are spot welded
to the inner panel 25. Moreover, a plurality of points front to
rear of the outer wall parts 57 of the left and right stiffening
members 55 are spot welded to the inner panel 25, which limits the
stress concentration on the spot points when load is applied around
the left and right hinge installation sections 28.
[0052] As shown in FIG. 4B, the rear ends of the hinge arms 52 of
the left and right trunk hinges 14 are not simply cut
perpendicularly in the lengthwise direction, but have inclined cut
parts 52a cut approximately parallel to the vehicle widthwise
direction. By so doing, even when various forces are applied to the
trunk lid 11 supported by the left and right trunk hinges 14,
stress concentration at the contact points of the front end corner
parts of the left and right hinge arms 52 in the left and right
hinge installation bearing surfaces 42 is limited. As a result, the
stiffness of the left and right hinge installation sections 28 can
be enhanced efficiently.
[0053] As described above, in the trunk lid frame structure
according to the present embodiment, the trunk lid 11 has the outer
panel 21 on the outside of the vehicle and the inner panel 25 on
the inside of the vehicle, and is formed such that its
cross-section is approximately L-shaped with the top face part 12
and the rear face part 13, wherein: the left and right hinge
installation sections 28 to which the hinge arms 52 of the left and
right trunk hinges 14 are attached are provided on the left and
right sides of the top face part 12; the lock installation section
29 to which the trunk lock mechanism 15 is attached is provided in
the left to right center of the rear face part 13; the left and
right beading parts 31 which are in an approximately V-shaped
arrangement such that they extend between the left and right hinge
installation sections 28 and the lock installation section 29, are
provided on the inner panel 25; and the fastening parts 54 of the
left and right hinge arms 52 are arranged diagonally along the
lengthwise direction of the left and right beading parts 31.
[0054] According to this construction, since the fastening parts 54
of the left and right hinge arms 52 are arranged diagonally along
the lengthwise direction of the left and right beading parts 31,
the left and right beading parts 31 are linked in straight lines to
the fastening parts 54 of the hinge arms 52, so that flexing of the
left and right hinge installation sections 28 is suppressed
efficiently, which enables the stiffness of the whole trunk lid 11
to be improved.
[0055] Furthermore, it is possible to provide the hinge
installation bearing surfaces 42 of the left and right hinge
installation sections 28 directly on the left and right beading
parts 31, so that compared with the case in which the hinge
installation bearing surfaces 42 are formed separately in the
vicinities of the left and right beading parts 31, it is possible
to improve the formability of the inner panel 25 and improve the
stiffness as a result of increasing the beading depth and the like,
and also improve the workability and lightening as a result of
enlarging the working holes 16 (lightening holes).
[0056] Moreover, in the above-described trunk lid frame structure,
since the hinge side beading part 35 that extends between the left
and right hinge installation sections 28 is provided in the inner
panel 25, and the hinge side beading part 35 and the left and right
beading parts 31 are arranged continuously, the left and right
hinge installation sections 28 and the lock installation section
29, which are force input points to the trunk lid 11, are linked
via the beading parts 31 and 35, and thus it is possible to
increase the stiffness of the whole inner panel 25 efficiently.
[0057] Furthermore, in the trunk lid frame structure, since left
and right stiffening members 55 are provided in the left and right
hinge installation sections respectively, and the left and right
stiffening members 55 have inner wall parts 56 that extend
diagonally along the lengthwise direction of the left and right
beading parts 31 and span the hinge side beading part 35, it is
possible to increase the stiffness with respect to the load at the
joining sections 41 of the left and right beading parts 31 and the
hinge side beading part 35 when opening and closing the trunk lid
11.
[0058] Moreover, in the trunk lid frame structure, since the ends
of the fastening parts 54 of the hinge arms 52 are cut along the
widthwise direction of the vehicle, it is possible to effectively
prevent the occurrence of stress concentration originating from the
corners at the ends of the fastening parts 54 of the hinge arms
52.
[0059] The present invention is not limited only to the
above-described embodiment. For example, the construction may be
such that the trunk lock mechanism 15 is installed on the vehicle
side, and a striker corresponding to the trunk lock mechanism 15 is
installed in the trunk lid 11. Furthermore, the construction may be
such that the left and right stiffening members 55 span the left
and right beading parts 31 and the hinge side beading part 35, and
bend around with them.
[0060] While preferred embodiments of the invention have been
described and illustrated above, it should be understood that these
are exemplary of the invention and are not to be considered as
limiting. Additions, omissions, substitutions, and other
modifications can be made without departing from the spirit or
scope of the present invention. Accordingly, the invention is not
to be considered as being limited by the foregoing description, and
is only limited by the scope of the appended claims.
* * * * *